Telephone Signalling Transceiver / Least Cost Router
CMX860
1.7.1.3 Operating Characteristics
For the following conditions unless otherwise specified:
VDD = AVDD = DVDD = 2.7V to 5.5V at Tamb = -40 to +85°C, VSS = AVSS = DVSS
Xtal Frequency = 11.0592 or 12.288MHz ± 0.01% (100ppm), 0dBm corresponds to 775mVrms.
DC Parameters
Notes
Min.
Typ.
Max.
Units
IDD (Powersave mode, VDD = 3.0V)
(Reset but not powersave, VDD = 3.0V)
(Reset but not powersave, VDD = 5.0V)
(Running, VDD = 3.0V)
(Running, VDD = 5.0V)
Logic '1' Input Level
1, 2
1, 3
1, 3
1
1
4
-
-
-
-
-
2.0
1.0
2.5
3.0
5.0
-
5.0
2.0
4.5
5.0
9.0
-
mA
mA
mA
mA
mA
DVDD
DVDD
mA
70%
-
-1.0
Logic '0' Input Level
4
-
-
30%
+1.0
Logic Input Leakage Current (Vin = 0 to DVDD),
(excluding XTAL/CLOCK input)
Output Logic '1' Level (lOH = 2 mA)
Output Logic '0' Level (lOL = -3 mA)
IRQN O/P 'Off' State Current (Vout = DVDD
Schmitt triggers input high-going
threshold (Vthi) (see Figure 11)
Schmitt triggers input low-going
threshold (Vtlo) (see Figure 11)
80%
-
-
-
-
-
-
-
0.4
1.0
DVDD
V
mA
V
)
0.56DVDD
0.56DVDD
+ 0.6V
0.44DVDD
0.44DVDD
- 0.6V
-
V
RDRVN ‘ON’ resistance to DVSS (DVDD= 3.0V)
RDRVN ‘OFF’ resistance to DVDD (DVDD= 3.0V)
-
-
50
1300
70
3000
W
W
Notes:
1. At 25°C, not including any current drawn from the CMX860 pins by external circuitry
other than X1, C1 and C2.
2. All logic inputs at DVSS except for RT and CSN inputs which are at DVDD
3. General Mode Register b8 and b7 both set to 1.
4. Excluding RD, RT, HD and HT pins.
.
4
3.5
3
2.5
Vin
2
1.5
1
Vthi
Vtlo
0.5
0
2.5
3
3.5
4
4.5
5
5.5
DVdd
Figure 11 Typical Schmitt Trigger Input Voltage Thresholds vs. DVDD
XTAL/CLOCK Input
Notes
Min.
Typ.
Max.
Units
(timings for an external clock input)
'High' Pulse Width
'Low' Pulse Width
30
30
-
-
-
-
ns
ns
ã 2002 Consumer Microcircuits Limited
38
D/860/5
CMLMICRO [ CML MICROCIRCUITS ]
